Question

Which one of the following statements is not correct?


a.
Momentum is a vector as well as has the same direction as velocity v. Since mass is a scalar, when velocity is in a negative direction (i.e., opposite the direction of motion), the momentum will be in a negative direction; and when velocity is in a negative direction, momentum will likewise be in a positive direction. The SI unit for momentum is (kg m/s).


b.
In physics, the term work has a very specific definition. Work is generally application of force, f, to move an object over a distance, d, in the direction that the force is actually applied. Work, W, is described by the equation (w=fd)


c.
Kinetic energy is generally called energy of motion. A moving object has kinetic energy. Potential energy, also called stored energy, comes in several forms. Gravitational potential energy is actually the stored energy an object has as a outcome of its position above Earth’s surface (or another object in space). A roller coaster car at the top of a hill has gravitational potential energy.


d.
Power can be expressed in units of watts (W). This unit can be utilized to measure power related to any form of work or energy.

Answer 1

Explanation:

d.

Power can be expressed in units of watts (W). This unit can be utilized to measure power related to any form of work or energy.